Edward F. Fern, The Use of Focus Groups for Idea Generation: The Effects of Group Size, Acquaintanceship, and Moderator on Response Quantity and Quality, Journal of Marketing Research, Vol. 19, No. 1 (Feb., 1982), pp. 1-13
No takes yet. Share an insight, caveat, or question.
Edward F. Fern (1982) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: